Call Goal as call/1,
unifying Time with a dict that provides information on the
resource usage. If Goal succeeds with a choice point,
backtracking reports the time used to find the next answer,
failure or exception. If Goal succeeds deterministically no
choice point is left open. Currently Time contains the keys
below. Future versions may provide additional keys.
- wall:Seconds
- cpu:Seconds
- inferences:Count
call_time/2 is
defined as below. Note that for call_time/2
the time is only available if Goal succeeds.
call_time(Goal, Time) :-
call_time(Goal, Time, Result),
call(Result).
| Result | is one of true, false
or throw(E), depending on whether or not the goal succeeded
or raised an exception. Note that
Result may be called using call/1
to propagate the failure or exception. |
call_time(:Goal,
-Time:dict)